Konglin, that's Swifty, a pretty famous Youtube warrior. While not necessarily the best out there in PVP, he's pretty ballsawesome. I'd say it's a combination. He's really creative with macros, very good at reactions, and is sponsored by Razer, so he's got all the hardware you need to quickly spam whatever. Interesting tidbit though, he's missing his pinky finger, so he can't really hit any modifier keys, like Shift/Alt/Ctrl. Watch all his videos, you'll learn a lot.

Yah, still valid and still works for burst. Although you will see a lull in damage after the 20s in pvp. I've found these to be great Execute phase macros for PVE, but terrible when up against a pally or preist in PVP. 1Shot macro + pally bubble = sad panda

Probably not very many, Wil, but just because you don't have very many abilities yet. At level 8, especially if you're a new player, just focus on learning what each ability does (and go to curse.com, to download recount, so you can track your dps)

What about Swifty's last video that show the use of /castsequence Overpower, Cleave to gain Overpower damage by using the Overpower Glyph? I want to know why the cleave is used after overpower instead of before overpower to grant the 20% damage bonus. Any idea?